Door check and spring.



No. 734,658. PATENTED JULY 28,1903 V. BEAURBGARD & G. S. GOODI-NG.

DOOR CHECK AND SPRING.

APPLICATION FILED TEE. 18, 1903.

2 SHEETS-SHEET 1...

N0 MODEL.

H In ll II THE mums PETERS co, PHOTO-LUNG. WASHINGTON nv c.

l 2b which is simple Nrrn STATES ATENT Patented July 28, 1903.

FFICE.

vroros BEAUaEcARmoF nosromnun CHARLES s. coonmc, orBRooKa LINE, MASSACHUSETTS; SAID BEAUREGARD ASSIGNOR TO SAID GOODIN'G.

000R "CHECAKAND SPRING.

SPECIFICATION forming part of LettersP atent 734,658, dated July 28, 1903. ipplica'tlbn. filed February I8,- 1903 Serial No. 143.893. (No model.)

To and whom it may concern.-

Be it known that we, VICTOR BEAUREGARD, residing at Boston, in the county of Suffolk, and CHARLES S. GOODING; residing at Brookline, in the county of Norfolk, in the State of Massachusetts, citizens of the United States, have inventednew and useful Improvements inDoor Checks and Springs, of which the following is a specification.

This invention relates to door checks and springs.

The object of the invention is to providea door check and spring which may be attached to a right-hand or a left-hand door uponthe pposite I5 same side as the hinges or upon the 0 side of the door from the hinges.

The object of this invention is still further to provide a device of the character described which may be. easily attached to the door and and durablein its construction. 7

The invention consists in a door closing and checking mechanism comprising a pneumatic cylinder and means to fasten said cylinder to a door or door-casing, in combination with a piston, a piston-rod provided with a rack, a journal-bearing bracket fast to said door or door-casing, a spring-casing journaled to rotate upon said journal-bracket, said casing 3o constructed with a gear upon itsperiphery and meshing with said rack, and means to rotate said spring-casing during the operation of the check. g The invention again consists in theinstrumentalities hereinbefore referred to in combination with a pneumatic cylinder, means to fasten said cylinder to a door or door-casing, a piston, and a piston-rod provided with a rack,said rack meshing into a gear provided upon the exterior of said spring-casing.

The invention further consists in an improved supporting-bracket by means of which a door-closing mechanism may be fastened to the door or door-casing and adapted for eithera right or left handdoor, as hereinafterdescribed, and'particularly pointed out in the oIaimsL- The invention still further consists in the combination andarrangement of parts set 5o forthin the following specification, and particularly pointed out in the claims thereof.

'i lbn.

lined 4 in-Fig. l.-

casing is rotated.

Referring to the drawings, Figure l is a plan'view of our improved door check and spring, illustrating the same attached to a right-hand door upon the hinged side thereof, said door and casing being broken away to save space in the drawings. Fig. 2 is a front elevation of 'the check and spring illustrated in Fig. 1, together with a portion of a door and door-casing. Fig. 3 is an end elevation ofonrimproved door check and spring as viewed from the right of Fig. 2, a portion of the door and door-casing being shown in sec Fig. at is a detached central .vertical section taken through the spring-casing on Fig; 5 is a longitudinal section taken on line 5 5 in Fig. 2. Fig. -6 is a plan view of our improved check, showing the same attached to a right-hand door on the hinged side thereof with the door partly open. Fig. 7 is a perspective view of our improved supporting-bracket. Fig. 8 is a plan view similar. to Fig. 1, illustrating our improved check and spring attached to a left-hand door on the hinged side thereof. Fig. 9 is a plan view of ourimproved check and spring, showing the same attached to a right-hand door on the opposite side from the hinges, a portion' of the door-casing being illustrated in dotted lines. Fig. lOisa view similar to Fig. 9-, illus- 8o trating our improved check attached to a left-hand door on theside opposite the hinges.

Fig.1l is a sectional elevation on line ll 11 inFig. 9 looking toward Lheleft-hand side of the figure. Fig. 12 is a detailed side elevation of the arm, by means of which the spring- Fig. 13 is a detailed plan view of the journal-bearing bracket. Fig. 14 is an enlarged detail section on line 14 lat of Fig. 4:. Fig. 15 is a plan view of the spring- 0 casing and arm, illustrating a modifiedmeans of attaching said arm to said spring-casing. In the drawings, 15 is a door, 16 the doorcasing, and 17 the door-hinges.

18 is a pneumatic cylinder provided at one end with a cap 19, fast thereto, and at the other end with a journal-bearing bracket 20,

having a cylindrical flange 21 thereon which serves, as a cap for one end of the pneumatic cylinder 18. The journal-bearing bracket 20 too has a sleeve 22, fast thereto and preferably integral therewith, which forms a bearing for the cap 19.

a journal-stud 23, integral withthe closed end 24 of the cylindrical spring-casing 25. The spring-casing 25 is adapted to rotate upon thejournal-bearing bracket and is rotated thereon by an arm 26, provided with a rectangular shank 27, which projects through a hole provided in the spring-casing and extending longitudinally through the journalstud 23. (See Fig. 4.) Said arm and shank are held in the spring-casing by means of a washer 29 and split pin 30. The outer end of the arm 26 is connected by an adjustable link 52 to a bracket 28, fast to the door or door-oasing, as the case may be, and as hereinafter more fully set forth. The link 52 is pivotally connected at 31 to the bracket 28 and at 32 to the arm 26. The piston 33, of any dosirable construction, and the piston-rod 34 are adapted to reciprocate in the interior of the cylinder 18, and a reciprocatory motion is imparted to said piston and piston-rod by gear-teeth 35, formed upon the periphery of the cylindrical spring-casing 25, said gearteeth meshing into a rack 36, formed upon and extending longitudinally of the pistonrod 34. A regulating-screw 37 is provided in A spring 38 is provided in the interior of the spring'casing 25, the outer end of said spring being fast to the spring-casing 25, and the inner end of said spring engaging teeth 39, formed upon the periphery of g the sleeve 22.

It will be noted that the teeth 35 upon the periphery of the spring-casing 25 extend only partially around the circumference of said casing, a smooth portion 40 being left upon a portion of the periphery, which meshes into a curved portion 41, formed upon the piston rod 34 when the piston has been driven to the extreme left of the cylinder 18. (See Fig. 5.)

The door closing and checking mechanism, hereinbefore specifically described, is supported upon a door or door-casing by means of a bracket 42, preferably formed of sheet metal,

and comprising a cylindrical sleeve portion 43,

which extends partly around the cylinder 18 and is split lengthwise thereof at 44. Said bracket 42 is provided with two flanges 45, right-angularin cross-section. The sides 46 46 of said flanges are provided with holes 47 47, through which screws 48 48 project and fasten said bracket to the door or door-casing, as may be desired and as hereinafter described. The sleeve portion 43 of the bracket 42 is clamped firmly to the cylinder 18 by means of clampbolts 49, which extend from one flange to the other and through the sides 51 51 of said flanges. It will be seen that when the clampbolts 49 are tightened, preferably by means of a screw-driver, said bolts being provided with a screw-driver head, the nuts 50 upon said clamp-bolts will be prevented from rotating on account of the fact that they are located in a depression between the sleeve 43 and the side 46.

The operation of our improved door check and spring and the method of attaching the same are as follows: When the device is fastened to a right-hand door on the hinged side, as shown in Figs. 1, 2, 3, and 6, the supporting-bracket 42 is clamped to the cylinder 18 by means of the clamp-bolts 49, with the sides 46 of the flanges 45 in a vertical position. Said bracket 42 is then fastened to the door by means of screws 48. Upon opening the door, as shown in Fig. 6, the link 52 and arm 26 will rotate the cylindrical spring-casing 25, winding up the spring 38 and moving the piston 33 from the position shown in Fig. 5 to the extreme left of the cylinder 18 by means of the gear 35 meshing into the rack 36. When said piston has arrived at the extreme left of the cylinder 18, the smooth portion 40 upon the periphery of the spring-casing will engage the curved portion 41 upon the piston-rod 34, and the longitudinal mo tion of said piston and piston-rod will come to an end until the doorbegins to close, when the piston will be driven toward the right (see Fig. 5) as soon as the teeth 35 begin to intermesh with the teeth of the rack 36.

WVhen it is desired to attach our improved check and spring to a left-hand door upon the hinged side, the entire mechanism is reversed from the position shown in Fig. l to that shown in Fig. 8, and the arm 26 inverted or reversed from the position shown in Fig. 1 to that shown in Fig. 8. ily done by removing the split pin 30 and Washer 29, withdrawing the rectangular shank 27 from the journal-stud 23, inverting said shank and arm and inserting said shank in the hole from the opposite-end of the stud 23 to that at which it is shown in Fig. 4 and replacing the washer 29 and split pin 30.

To attach our improved check and spring to a right-hand door upon the side opposite to the hinges the entire checking mechanism is inverted or reversed from the position shown in Fig. 1 to that shown in Fig. 9 and the supporting-bracket 42 turned to a position at right angles to that shown in Fig. 1 with relation to the cylinder 18. This is accomplished by loosening the clamp-bolts 49 and turning the bracket 42 upon the cylinder 18 until the sides 46 46 are horizontal. Then the supporting-bracket 42 is clamped to the cylinder by tightening the clamp-bolts 49, and the device is attached to the under side of the door-casing 16 by means of screws, as shown in Fig. 11.

To adapt the check and spring for use with a left-hand door upon the side opposite to the hinges, the entire mechanism is reversed from the position shown -'in Fig. 2 to that shown in Fig. 10 and the bracket 42 screwed to the casing 16.

It will be noted that when the device is used on the hinged side of the door the bracket 42 is fastened to the door and the link-bracket 28 to the door-casing. When the device is attached to the side of the door opposite to the hinges, the supporting bracket 42 is fastened to the under side of the door-casing This is read- ICC upon the exterior of the spring-casing, so

that for a slight rotation of said spring-casing a considerable longitudinal movement will be imparted to the piston 33, and this is anim portant feature in devices of this character.

By means of the supporting-bracket 42 it Willbe seen that our improvedcheck may be attached to the door or door-casing without any extra parts or brackets, so that viewing the matter from a practical and business standpoint there are no detached parts to be lost, and the dealercarries only one style of check for all styles of doors.

While we have illustrated the sleeve 43 as [being cylindrical and as attached to a cylin- 25.

der, it is evident that the same may be rectangular and attached to a rectangular portion of a door-checking mechanism without departing from the spirit of our invention.

It will be seen and understood that while we have provided the arm 26 with a shank 27 extending therefrom through the spring-casing, said shank might be omitted and an arm 53 provided with a hole to receive a projection 54: upon the spring-casing, to which said arm might be fastened by screws, without departing from the spirit of our invention, as shown in Fig. 15.

Attention is also called to the fact that the bracket 42, cylinder 18, and journal-bearing bracket 20 are all fastened rigidly together when the device is in operation and constitute, in effect, a single bracket adapted to be attached to 'a door or door-casing upon which the rotary spring-casing 25 is journaled.

It will also be seen that the link 52 might be pivotally connected to a projection integral with the spring-casing 25 instead of being pivoted to atdetachable arm 26 and a similar result secured without departing from the spirit of our invention.

' Attention is called to the fact that by rotating the spring-casing, as hereinbefore described, instead of the central spindle (the j latter being the customary means of winding scribed. Another desirable featn re resulting from the rotation of the casing about a stationary journal-bearing in contradistinction to a rotary spindle and stationary casing is that thedoordoes not present such a rapidlyincreasing resistance upon being opened and the initial tension of thespring when the door both in the pneumatic and liquid forms of is closed can be made greater Without overstraining said spring. It is evident that the less the spring is wound up in opening a door the less will be the strain upon said spring and the longer will be the life thereof, and also the more even will be the closing force exerted by said spring upon the door between the open and closed positions there- Hitherto in devices of this character check the spring has been wound up (when the door was opened) from a spindle attached to the inner end of the spring, and as the rotation of the spindle also actuated the piston it was necessary in order to obtain the desiredextent of movement of said piston to rotate said spindle to a greater extent than was desired in the winding up of the spring. In the devices hereinbefore described the movement of the piston is obtained from the outside of the gear-casing, and the outer end of. the spring is wound up to practically the same extent as the movement of the piston instead of the inner end of said spring being wound up to that extent. Hence the amount which the spring is Wound up and the strain thereon in opening a door is very much less in the device of this invention than in devices of this character heretofore in use.

Finally, it will be seen and understood that.

by placing the gear upon the periphery of the spring-casing the leverage of the checkingpiston is greatly increased as compared with the forms hereinbefore referred to, wherein the checking-piston is attached to a small spindle at a point necessarily much nearer the center of the spindle than is the gear upon the exterior of the spring-casing in our device.

We therefore do not wish to be understood" rotate upon said journal-bearing bracket, a

spring, one end fast to said casing, the other to said journal-bearing bracket, an arm, means to fasten said arm to opposite ends of saidspring-casing, and means to connect said arm to a door-casing or door.

2. A reversible door closing mechanism, comprising in its construction a journal-bearing bracket, adapted to be fastened to a doorcasing or door, a spring-casing journaled to rotate upon said journal-bearing bracket, a spring, one end fast to said casing, the other to said journal-bearing bracket, an arm, means to fasten said arm to opposite ends of said spring-casing, and a link, one end pivoted to said arm, and the other adapted to be pivoted to a door-casing or door.

3. A door-closin g mechanism comprising in its construction a rotatable spring-casing provided with a gear upon its periphery.

4. A door-closing mechanism comprising in its construction a rotatable cylindrical springcasing providing a spring-chamber, a journal-stud integral and concentric with said spring-casing located inside said chamber,and an arm fast to said spring-casing.

5. A reversible door closing mechanism comprising in its construction a rotatable cylindrical spring-casing providing a springchamber having one closed end, a journalstud concentric with said casing located inside said chamber and integral with said closed end, said stud provided with a hole extending longitudinally therethrough, an arm having a shank adapted to project through said hole, and means to detachably fasten said arm to said casing.

6. In a pneumatic door-check, a pneumatic cylinder, and means to fasten said cylinder to adoor or door-casing, in combination with a piston, a piston-rod provided with a rack, a journal-bearing bracket fast to said cylinder, a spring-casing journaled to rotate upon said journal-bracket, said casing constructed with a gear upon its periphery and meshing with said rack, and means to rotate said springcasing during the operation of the check.

7. In a pneumatic door-check, apneumatic cylinder, and means to fasten said cylinder to a door or door-casing; in combination with a piston, a piston-rod provided with a rack, a journal-bearing bracket fast to said cylinder, a spring-casingjournaled to rotate upon said journal-bracket, said casing constructed with a gear upon its periphery, and meshing with said rack, an arm fast to said spring-casing and a link pivotally connected at one end to said arm and at the other to a door-casing or door.

8. In a pneumatic door-check, a pneumatic cylinder, and means to fasten said cylinder to adoor or door-casing; in combination with a piston, a piston-rod constructed with a rack along its length, a journal-bearing bracket 'fast to said cylinder, a spring-casing journaled to rotate upon said journal-bracket,

tion with a bracket adapted to be fastened to a door or door-casing, adjustable longitudinally of said cylinder, and means to clamp said bracket to said cylinder.

12. In a door-check, a bracket adapted to be attached to a door or door-casing, comprising a hollow cylindrical sleeve, together with a flange thereon; and means to fasten said sleeve to a cylinder inclosed therein.

13. In a door-check, a bracket adaptedto be attached to a door or door-casing, comprising a hollow cylindrical sleeve, split longitudinallythereof, together with a flange extending longitudinally thereof; and means to clamp said sleeve to a cylinder inclosed therein.

14. In a doorcheck, a bracket adapted to be attached to a door or door-casing, comprising a hollow cylindrical sleeve, split longitudinally thereof, together with a flange right angular in cross-section, extending longitudinally of said sleeve adjacent to said split.

1 5. In a door-check, a bracket, comprising a sleeve formed of sheet metal, having flanges thereon by means of which said bracket may be fastened to a door or door-casing, and means to fasten said bracketto a door-checking mechanism.

16. In a door-check, a bracket, comprising a sleeve formed of sheet metal, split longitudinally thereof, and two flanges right angular in cross-section extending longitudinally of said sleeve, adjacent to said split, together with clam p-bolts connecting said flanges.

17. In adoor-check,a brackethaving flanges thereon by means of which said bracket may be attached to a door or door-casing, in combination with a door-closing mechanism, said bracket inclosing a portion of said door-closing mechanism, and means to clamp said bracket to said inclosed portion of said doorclosing mechanism.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

VICTOR BEAUREGARD.

CHARLES S. GOODING.

Witnesses:

LoUIs C. J ONES, SYDNEY E. TAFT. 

